The VISM SPD solar combat red dot sight is perfect for your AR rifle and pistol platforms. This solar combat red dot reflex optic runs off the sun via the solar cell or AAA Battery included. This SPD Solar Combat Red Dot reflex optic features flip open lens caps, five brightness settings for the red dot reticle in battery mode. Unlimited eye relief for flexible mounting positions on the firearm. Includes a low rail mount and a high quick release rail mount for mounting onto weaver/ Picatinny/ MIL-STD 1913 type rails. The base of the optic is compatible with (Most) Aimpoint® Micro Mounts. Ncstar Vism Lifetime Limited Warranty.